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Measurement results off by a factor of 1.5 after calibration #3

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wocard2 opened this issue Jan 26, 2024 · 2 comments
Open

Measurement results off by a factor of 1.5 after calibration #3

wocard2 opened this issue Jan 26, 2024 · 2 comments

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@wocard2
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wocard2 commented Jan 26, 2024

In the schematic, reference resistor R9 has a value of 1 kΩ, in the source code (lines 587 and 588 of Frontend.cpp), a value of 1.5 kΩ is used for the reference resistor.
@wocard2
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wocard2 commented Jan 26, 2024

Calibration resistor, not reference resistor. Sorry.

@jankae
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jankae commented Jan 26, 2024

This is likely just a result of part availability when I built my device. My guess is that I wanted to use a 1 kΩ but it wasn't available when I ordered the parts, so I changed to 1.5 kΩ and forgot to adjust the schematic

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@jankae @wocard2